List users and roles: \du

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List users and Roles https://www.postgresql.org/docs/current/app-psql.html

Lists database roles. (Since the concepts of “users” and “groups” have been unified into “roles”, this command is now equivalent to \dg.) By default, only user-created roles are shown; supply the S modifier to include system roles. If pattern is specified, only those roles whose names match the pattern are listed. If the form \du+ is used, additional information is shown about each role; currently this adds the comment for each role.


List roles using \du command:

Default PostgreSQL 12 in Ubuntu 20.04

postgres=# \du
                                   List of roles
 Role name |                         Attributes                         | Member of
-----------+------------------------------------------------------------+-----------
 postgres  | Superuser, Create role, Create DB, Replication, Bypass RLS | {}


postgres=# \du
                                      List of roles
   Role name    |                         Attributes                         | Member of
----------------+------------------------------------------------------------+-----------
 YOUR_USER      | Create DB                                                  | {}
 YOUR_USER2     | Cannot login                                               | {}
 YOUR_USER3     |                                                             | {}
 postgres       | Superuser, Create role, Create DB, Replication, Bypass RLS | {}


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